diff --git a/ryu/ofproto/ofproto_v1_5_parser.py b/ryu/ofproto/ofproto_v1_5_parser.py
index 744107c5..f7ca3be1 100644
--- a/ryu/ofproto/ofproto_v1_5_parser.py
+++ b/ryu/ofproto/ofproto_v1_5_parser.py
@@ -2814,7 +2814,6 @@ class OFPGroupDescStats(StringifyMixin):
         self.length = length
         self.type = type_
         self.group_id = group_id
-        self.bucket_array_len = bucket_array_len
         self.buckets = buckets
         self.properties = properties